There are many reasons for this:

1: First, carefully check the network cable and the crystal oscillator (R45) connector: Are the crystal oscillator connector and socket plugged in (loose)? Contact, okay? What is the contact resistance? Is there dust? Is it oxidized? Is the mechanical lock between the lens head and the seat locked? Is the lock safe? Are the cable and the crystal head pressed tightly and in good contact? The line-to-line insulation resistance of the network cable (using 100V shaking table) should be greater than 20 megohms.

★★★☆▼▲●■ This answer belongs to people who still love me. Plagiarism is shameful ★★☆▼▼▼▲●■.

2: Turn on the computer, then open the device manager, find the network card, stop using it, and then restart it, and you may be fine.

If not, don't be angry! There are no suffocated cows, only dead fools; …………………………….

3. If you can't do it again: Look at the following methods. You may wish to take measures and methods that you feel acceptable and thoroughly sort out your love machine, so that this phenomenon will not occur.

★★★☆▼▲●■ This answer belongs to people who still love me. Plagiarism is shameful ★★☆▼▼▼▲●■.

Answer: Users who frequently surf the Internet should open the equipment shell after power failure for half a year at most (by the way, check whether the internal connection of the equipment is good, whether the memory stick is loose, and whether the contact between the memory stick and the card slot is good? Is the plug-in loose? Is it tight? Whether the connection point is firm and the contact is good), clean the dust inside the equipment.

B: Over-voltage, low voltage, excessive voltage fluctuation, over-current and fever of the equipment lead to overheating protection action removal failure, and the equipment exits the operation (that is, there will be signs such as slow, delayed, repeated start-up, delayed, disconnection, interruption, automatic shutdown, and crash. );

★★★☆▼▲●■ This answer belongs to people who still love me. Plagiarism is shameful ★★☆▼▼▼▲●■.

1. Signal-to-noise ratio: When the signal-to-noise ratio is small, the useful signal is covered by noisy stray signals (especially intersymbol interference between symbols), which makes the receiving path unable to correctly extract the useful signal from the noisy signal, and the decision circuit cannot correctly judge the symbols, resulting in packet loss. Serious packet loss is the cause of the delay. Serious delay will mean disconnection (which will cause slowness, delay, repeated startup, disconnection, delay, disconnection, interruption, disconnection, automatic shutdown, collapse, etc.). ). Use a noise meter or level meter to measure whether the noise level is within the allowable range, or use an oscilloscope to observe whether there are stray signals? Is there intersymbol interference? Take measures to eliminate.

You can also take the following measures to deal with the grounding shielding of the equipment. A lot of interference comes from poor shielding and grounding, resulting in computer slowness, packet loss, repeated startup, delay, disconnection, automatic shutdown and crash.

★★★☆▼▲●■ This answer belongs to people who still love me. Plagiarism is shameful ★★☆▼▼▼▲●■.

2. Receiving level: The received signal should not be too low. If it is too low, it will not reach the threshold level amplitude required by the receiving path, and the equipment will not work normally; If the level is too high, the front-end circuit of the receiving path will be saturated or burned out. Therefore, receiving level adjustment is very important. Adjust the receiving level at the connection with an electric level meter or oscilloscope within an appropriate amplitude range.

★★★☆▼▲●■ This answer belongs to people who still love me. Plagiarism is shameful ★★☆▼▼▼▲●■.

Impedance matching: the connection point must match the impedance relatively, and the mismatch of input and output impedance will lead to reflection attenuation, and the signal will not work normally no matter how strong it is.

1: Put the equipment in a place where people are safe, turn off the power first, then open the box cover of the equipment, and use air convection to strengthen contact with the air for natural heat dissipation;

★★★☆▼▲●■ This answer belongs to people who still love me. Plagiarism is shameful ★★☆▼▼▼▲●■.

2. Install a micro fan on the equipment to increase air convection and carry out forced heat dissipation;

3. If you are in it, I suggest you: after disconnecting the power supply, add a heat sink to the heating part of the equipment.

4. After the equipment is disconnected from the power supply, drill a lot of holes up and down the equipment with a 3 mm drill bit to strengthen air convection and improve heat dissipation conditions;

★★★☆▼▲●■ This answer belongs to people who still love me. Plagiarism is shameful ★★☆▼▼▼▲●■.

5. As for the place where the equipment is ventilated and dry, it is best to make an insulating heat dissipation bracket (also used in notebooks on the market) to support the natural heat dissipation of the equipment;

6. After the computer is used for a long time, the silica gel between the CPU and the heat sink is dry, and the CPU will be seriously heated, resulting in packet loss, delay, slow start-up, disconnection, automatic shutdown and crash. Re-coating silica gel can restore normal use.

★★★☆▼▲●■ This answer belongs to people who still love me. Plagiarism is shameful ★★☆▼▼▼▲●■.

C: Clean up the garbage fragments and IE cache generated by surfing the Internet in time: As long as you use a computer, you will generate garbage. If it is not cleaned up in time, it will accumulate more and more. If it is not cleaned for a long time, the space for running disk C will become smaller and smaller, more and more chaotic, and finally it will gradually slow down until it collapses; Therefore, arranging and running the C disk regularly can keep the running speed of the computer.

D: synchronize ADSL equipment first: turn off the power supply of the equipment and restart the equipment.

E: The software settings are reasonable, and three things are not installed: no informal software, no P2P (resource-consuming) software, and no uncommon software. Turn off all unnecessary network connections, such as thunder BT donkey;

★★★☆▼▲●■ This answer belongs to people who still love me. Plagiarism is shameful ★★☆▼▼▼▲●■.

F: optimize the network: people who turn on the computer to surf the Internet will produce garbage, just like eating without cleaning the table, washing the dishes and cleaning the stove, and the computer will gradually behave as slow, stuck, delayed, repeatedly started, disconnected and other faults; So I personally recommend using some gadgets: such as super rabbit, optimization master, master Lu or 360; Develop a good habit of cleaning up the garbage before going offline.

G: At least one valid and genuine antivirus software: the firewall is properly set (not too much and not too high); Viruses can slow down, crash, disconnect, get stuck, restart and shut down computers repeatedly.

H: Network card problem: The network card has proper bandwidth, stable operation and good heat dissipation.

Do a good job of grounding, separate strong and weak signals, and separate high and low frequency signals; Good shielding grounding; When surfing the Internet, try to avoid the rush hour.

★★★☆▼▲●■ This answer belongs to people who still love me. Plagiarism is shameful ★★☆▼▼▼▲●■.

As long as you follow the above seriously and stick to it often, your equipment will run smoothly and your mood will be comfortable; A low-profile computer can also satisfy you; Otherwise: the computer with higher configuration will fail frequently; Dress like a man (sketch: Peisi Chen among the good guys and bad guys: No matter how good clothes you give him, he won't be up to grade! ), clothes are not high or low, just clean. No matter how high your configuration is, if you don't use it according to the safe maintenance and use method of the computer, there will still be frequent failures and accidents. Many failures are man-made, everything depends on man-made!

★★★★☆◆▼▲●■ This answer belongs to the person who still loves me. Plagiarism is shameful.

Thank you for taking my answer!

six